Patents by Inventor Tetsuo Mikazuki

Tetsuo Mikazuki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Head positioning system for positioning a multiple head with respect to data and servo trasks of a recording medium
    Patent number: 4903151
    Abstract: A head positioning system on a recording medium includes a recording medium having a periodic arrangement of data tracks and servo tracks wherein the periodic arrangement having a predetermined period includes N.sub.d (N.sub.d is an integer equal to or larger than 1) number of data tracks and N.sub.s (N.sub.s is an integer equal to or larger than 2) number of servo tracks, the servo tracks having single phase servo patterns, alternatively recorded thereon, a multi-head carrying a plurality of head elements disposed in a direction perpendicular to the tracks, so that the distance between head elements is (N.sub.h +1/M)P where N.sub.
    Type: Grant
    Filed: January 22, 1987
    Date of Patent: February 20, 1990
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Makoto Mizukami, Akio Mitamura, Ryoichi Arai, Yasunaga Mitsuya, Tetsuo Mikazuki